Mitsubishi Electric FR-A800, Instruction Manual

Page: 245 / 1042

Parameters Control method
FR-A800 5 - 65
Changing the control mode with external terminals (MC signal)
●
To use ON/OFF of the MC signal to switch the control mode, set Pr. 800 or Pr. 451.
Refer to page 5-58 and set Pr. 800 or Pr. 451.
To input the MC signal, set "26" in any of Pr. 178 to Pr. 189 (input terminal function selection) to
assign the function.
●
When using an analog input terminal (terminal 1, 4) for torque limit and torque command,
switching of the control mode changes the terminal function as shown below.
●
Functions of the terminal 1 under different control modes
Pr. 868
setting
Speed control/torque control
switchover
Speed control/position control
switchover
Position control/torque control
switchover
Speed control
(MC signal-OFF)
Torque control
(MC signal-ON)
Speed control
(MC signal-OFF)
Position control
(MC signal-ON)
Position control
(MC signal-OFF) Torque control
(MC signal-ON)
0
(initial
value)
Speed setting
assistance
Speed limit
assistance
Speed setting
assistance
⎯ ⎯
Speed setting
assistance
1
Magnetic flux
command
#
Magnetic flux
command
#
Magnetic flux
command
#
Magnetic flux
command
#
Magnetic flux
command
Magnetic flux
command
2
Regenerative
torque limit
(Pr. 810 = 1)
⎯
Regenerative
torque limit
(Pr. 810 = 1)
Regenerative
torque limit
(Pr. 810 = 1)
Regenerative
torque limit
(Pr. 810 = 1)
⎯
3
⎯
Torque
command
(Pr. 804 = 0)
⎯ ⎯ ⎯
Torque
command
(Pr. 804 = 0)
4
Torque limit
(Pr. 810 = 1)
Torque
command
(Pr. 804 = 0)
Torque limit
(Pr. 810 = 1)
Torque limit
(Pr. 810 = 1)
Torque limit
(Pr. 810 = 1)
Torque
command
(Pr. 804 = 0)
5
⎯
Forward/reverse
rotation speed
limit (Pr. 807 = 2)
⎯ ⎯ ⎯
Forward/reverse
rotation speed
limit (Pr. 807 = 2)
6
⎯ ⎯
Torque bias
# ⎯ ⎯ ⎯
9999
⎯ ⎯ ⎯ ⎯ ⎯ ⎯
Tab. 5-22: Functions of the terminal 1 under different control modes